The process where a cell sends signals to indicate its internal condition is known as cell signaling. This biological communication mechanism allows cells to respond appropriately to changes in their environment or internal state. Signals can be in the form of hormones, neurotransmitters, or other molecular messengers. Proper functioning of cell signaling pathways is crucial for various physiological processes, including growth, immune response, and homeostasis. Disruptions in these signaling networks can lead to diseases such as cancer or metabolic disorders, highlighting their importance in health.